mainly glassy with amygdules and glass
An igneous rock is any crystalline or glassy rock that forms from cooling of a magma. Color and texture help determine the chemical composition of the rock.
No, rocks made of sediments are called sedimentary rocks. Igneous rock comes from volcanic activity -- lava and the like.
oil and gas
Igneous-sedimentary weathering/erosion Igneous-Metamorphic high pressure and heat
Granite is a felsic, coarse grained, intrusive igneous rock.
Rock that forms from molten rock that cools and solidifies is called igneous rock.
Igneous rock is formed.
Igneous rock is formed when magma cools and becomes solid.
an igneous rock.
Obsidian is an igneous rock.
Extrusive igneous rock such as basalt, rhyolite, pumice, and obsidian.